A benchtop refrigerated centrifuge

Abstract

This utility model provides a benchtop refrigerated centrifuge, belonging to the technical field of refrigerated centrifuges, which solves the problem of the cumbersome process of cleaning the inner wall of the inner cylinder using wiping paper when cleaning the existing benchtop refrigerated centrifuge. It includes an outer shell, within which an inner cylinder is housed. A stepped window is opened on the upper surface of the outer shell, and a cover plate is placed in the stepped window. The cover plate has a latch, and the outer shell has a socket that engages with the latch. Several vertically arranged connecting rods are connected to the cover plate, and the lower end of each connecting rod is connected to a support ring. A water collection groove is provided on the support ring, and a rubber scraper is circumferentially mounted on the outer side of the support ring, conforming to the inner wall of the inner cylinder. The rubber scraper is inclined towards the water collection groove. When the support ring is connected to the cover plate, and the test tube is removed while the cover plate is opened, the rubber scraper on the support ring can scrape away impurities and condensate from the inner wall of the inner cylinder. The impurities and condensate collect in the water collection groove on the support ring, reducing the workload of cleaning the inner wall of the inner cylinder.

Description

Technical Field

[0001] This utility model belongs to the field of refrigerated centrifuge technology, specifically to a benchtop refrigerated centrifuge. Background Technology

[0002] A benchtop refrigerated centrifuge is a laboratory centrifuge with a refrigeration function, specifically designed for the separation and purification of samples under low-temperature conditions. It is widely used in biology, chemistry, medicine, and pharmaceutical fields, and performs particularly well in cell separation, protein and nucleic acid extraction, and blood component separation.

[0003] During operation, benchtop refrigerated centrifuges produce condensation that adheres to the inner wall of the cylinder. Additionally, during centrifugation, the test tubes and rotor may eject impurities that mix with the condensation and adhere to the inner wall. Therefore, timely cleaning is necessary after centrifugation to prevent these impurities from affecting subsequent centrifugation processes. Currently, the cleaning procedure involves operators wiping the inner wall with paper towels, which is rather cumbersome. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this utility model is to provide a benchtop refrigerated centrifuge that connects a support ring to a cover plate. When the cover plate is opened to remove the test tubes, the rubber scraper on the support ring can scrape away impurities and condensate from the inner wall of the inner cylinder. The impurities and condensate will collect in the water collection tank on the support ring, reducing the workload of cleaning the inner wall of the inner cylinder.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A benchtop refrigerated centrifuge includes an outer shell, an inner cylinder within the outer shell, a vertically mounted rotating shaft within the inner cylinder, the rotating shaft rotating and sealingly passing through the inner cylinder and connected to a motor, a test tube turntable connected to the upper end of the rotating shaft, a cooling channel provided on the side wall of the inner cylinder, the cooling channel being connected to a refrigeration device via a pipe, a stepped window opened on the upper surface of the outer shell, a cover plate placed in the stepped window, a latch provided on the cover plate, an insertion hole provided on the outer shell to engage with the latch, several vertically mounted connecting rods connected to the cover plate, a support ring connected to the lower end of the connecting rods, a water collection groove provided on the support ring, a rubber scraper annularly arranged on the outer side of the support ring conforming to the inner wall of the inner cylinder, the rubber scraper being inclined towards the water collection groove.

[0007] Preferably, the outer side of the support ring is provided with absorbent cotton located below the rubber scraper and in contact with the inner wall of the inner cylinder.

[0008] Preferably, the bottom of the inner cylinder is provided with a protrusion that mates with the inner side of the support ring.

[0009] Preferably, the outer edge of the protrusion is rounded, and a guide slope is provided on the inner bottom of the support ring.

[0010] Preferably, the upper surface of the protrusion is provided with an inclined surface, and the inclined surface is inclined towards the water collection tank.

[0011] Preferably, the outer shell is provided with a partition located below the inner cylinder, the lower surface of the partition is provided with a heat insulation layer, and the motor and refrigeration device are located below the partition.

[0012] Preferably, the sidewalls of the outer casing are provided with ventilation openings located below the partition, and the ventilation openings are covered with filter covers, with a fan installed at one of the ventilation openings.

[0013] Preferably, the latch includes a receiving groove formed in the side wall of the cover plate, a rod is movably disposed in the receiving groove, a spring is provided at the tail end of the rod, and a through groove communicating with the receiving groove is provided on the upper surface of the cover plate, and a handle connected to the rod is provided in the through groove.

[0014] Preferably, the cover plate is square.

[0015] Preferably, the bottom of the outer casing is provided with a shock-absorbing pad.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] Connect the support ring to the cover plate. When the cover plate is opened and the test tube is taken out, the rubber scraper on the support ring can scrape off impurities and condensate from the inner wall of the inner cylinder. The impurities and condensate will collect in the water collection groove on the support ring, reducing the amount of work required to clean the inner wall of the inner cylinder. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A cross-sectional structural schematic diagram provided for an embodiment of this utility model;

[0020] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0022] Figure 4 This is a schematic diagram of the structure of the support ring and cover plate provided in an embodiment of the present utility model;

[0023] Figure 5 A schematic diagram of the stepped window structure provided for an embodiment of this utility model.

[0024] Reference numerals: 1-Outer shell; 2-Filter cover; 3-Ventilation port; 4-Shock-absorbing pad; 5-Motor; 6-Fan; 7-Baffle; 8-Insulation layer; 9-Shaft; 10-Test tube turntable; 11-Inner cylinder; 12-Cooling channel; 13-Cover plate; 14-Handle; 15-Step window; 16-Connecting rod; 17-Refrigeration device; 18-Protrusion; 19-Support ring; 20-Rubber scraper; 21-Absorbent cotton; 22-Guide slope; 23-Lock; 231-Insertion rod; 232-Handle; 233-Through groove; 234-Receiving groove; 235-Spring; 24-Insertion hole; 25-Sealing gasket. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] In the description of this utility model, it should be noted that if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" appear to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] The following is combined Figures 1-5 This utility model will be described in detail.

[0029] Example

[0030] A benchtop refrigerated centrifuge includes a shell 1, an inner cylinder 11 inside the shell 1, a vertically arranged rotating shaft 9 inside the inner cylinder 11, the rotating shaft 9 rotatingly and sealingly passing through the inner cylinder 11 and connected to a motor 5, a test tube turntable 10 connected to the upper end of the rotating shaft 9, a cooling channel 12 provided on the side wall of the inner cylinder 11, the cooling channel 12 being connected to a refrigeration device 17 via a pipe, a stepped window 15 opened on the upper end face of the shell 1, a cover plate 13 placed in the stepped window 15, a latch 23 provided on the cover plate 13, an insertion hole 24 provided on the shell 1 to cooperate with the latch 23, several vertically arranged connecting rods 16 connected to the cover plate 13, a support ring 19 connected to the lower end of the connecting rods 16, a water collection tank provided on the support ring 19, a rubber scraper 20 annularly arranged on the outer side of the support ring 19 and conforming to the inner wall of the inner cylinder 11, the rubber scraper 20 being inclined towards the water collection tank.

[0031] The aforementioned refrigeration device 17 is existing technology. It can cool the coolant and deliver it to the cooling channel 12 in the inner cylinder 11, thereby cooling the inner cylinder 11. The inner cylinder 11 is made of a thermally conductive metal material. The inner cylinder 11 absorbs the high temperature inside and transfers it to the coolant. The coolant, after absorbing heat, flows back to the refrigeration device 17 for reuse. The refrigeration device 17 can also adopt a refrigeration mechanism such as that used in a refrigerator.

[0032] Motor 5 drives test tube turntable 10 to rotate at high speed via shaft 9, thereby centrifuging the test tubes placed in the turntable 10. The turntable 10 can be detachably connected to shaft 9, facilitating the replacement of turntables 10 of different specifications. During centrifugation, the delivery pump in refrigeration device 17 delivers low-temperature coolant to cooling channel 12 to cool the inner cylinder 11, ensuring the low-temperature requirements during centrifugation. After centrifugation, lock 23 is opened and cover 13 is removed. Cover 13, along with support ring 19, moves upward. During the movement of support ring 19, rubber scraper 20 scrapes away impurities and condensate on the inner wall of inner cylinder 11. The impurities and condensate are collected in a water collection tank, and then support ring 19 can be rinsed directly. Since the impurities are mainly thrown onto the inner wall of inner cylinder 11, they can be scraped away by rubber scraper 20. Afterward, simply wiping the condensate at the bottom of inner cylinder 11 completes the cleaning of the inner cylinder.

[0033] The support ring 19 is located at the bottom of the inner cylinder 11 during centrifugation, and the water collection tank can also collect the condensate flowing down the inner wall of the inner cylinder 11 through the rubber scraper 20.

[0034] In summary, this application effectively solves the problem of condensate and impurities adhering to the inner wall of the inner cylinder 11 through the synergistic effect of the aforementioned features. The stepped window 15 and the cover plate 13 provide a convenient opening and closing structure, the latch 23 and the insertion hole 24 ensure the cover plate 13 is fixed in place, the water collection tank is used to collect condensate and impurities, and the rubber scraper 20 is used to clean condensate and impurities from the inner wall. Therefore, this application not only improves the efficiency of the centrifuge but also simplifies cleaning operations and avoids frequent contact with potential biological or chemical contaminants by operators, demonstrating significant practical value.

[0035] An absorbent cotton 21 is annularly arranged on the outer side of the support ring 19, located below the rubber scraper 20 and in contact with the inner wall of the inner cylinder 11. The absorbent cotton 21 absorbs water from the inner wall of the inner cylinder 11 after scraping, ensuring that there are no water droplets on the inner wall of the inner cylinder 11. Only the condensate at the bottom of the inner cylinder 11 needs to be wiped dry, ensuring the inner cylinder 11 remains dry and preventing water corrosion of the metal inner cylinder 11 and the creation of a harmful environment. After use, the cover plate 13, support ring 19, and absorbent cotton 21 need to be dried to ensure normal use next time.

[0036] The absorbent cotton 21 can be installed in various ways. For example, it can be fixed to the outer annular position of the support ring 19 with adhesive, or it can be fixed to the support ring 19 using a slot structure. The absorbent cotton 21 can be made of a highly absorbent and durable material, such as polyurethane foam or fiber material. Furthermore, the thickness and width of the absorbent cotton 21 can be adjusted according to the dimensions of the inner cylinder 11 to ensure a tight fit against the inner wall of the inner cylinder 11, improving water absorption and cleaning performance.

[0037] The bottom of the inner cylinder 11 is provided with a protrusion 18 that mates with the inner side of the support ring 19. The protrusion 18 can position the support ring 19 to prevent it from swinging during the use of the centrifuge and affecting the stable operation of the centrifuge.

[0038] The outer edge of the protrusion 18 is rounded, and a guide slope 22 is provided on the inner bottom of the support ring 19. To improve the convenience and stability of the device, the rounded outer edge of the protrusion 18 reduces edge friction and jamming when the support ring 19 mates with the protrusion 18. The guide slope 22 on the inner bottom of the support ring 19 further guides the smooth mating of the support ring 19 and the protrusion 18. These two technical features, working together, solve the guiding and smoothing problems of the support ring 19 when mating with the protrusion 18.

[0039] The outer edge of the protrusion 18, which requires rounded corners, can be machined to ensure a smooth transition and reduce friction during mating. The guide slope 22 can be achieved by forming an inclined surface on the inner bottom of the support ring 19, allowing the support ring 19 to be naturally guided into place when mating with the protrusion 18. As a preferred embodiment, the angle of the guide slope 22 can be adjusted according to actual needs to achieve the best guiding effect.

[0040] The upper surface of the protrusion 18 is provided with a slope, which is inclined towards the water collection tank. The lowest point of the slope is higher than the support ring 19, and the slope can guide condensate into the water collection tank for collection. The angle and inclination direction of the slope can be adjusted according to actual needs to ensure optimal drainage. For example, the inclination angle of the slope can be designed between 10 degrees and 45 degrees to ensure that condensate can flow smoothly into the water collection tank. In addition, the surface of the slope can be smoothed to further reduce the adhesion of condensate and impurities, ensuring that they can flow smoothly into the water collection tank. As a preferred embodiment, the slope can be made of stainless steel to ensure its corrosion resistance and long service life.

[0041] A partition 7 is provided in the outer shell 1, located below the inner cylinder 11. A heat insulation layer 8 is provided on the lower surface of the partition 7. The motor 5 and the refrigeration unit 17 are located below the partition 7. The partition 7 and the heat insulation layer 8 separate the motor 5 and the refrigeration unit 17, which generate heat, from the inner cylinder 11, reducing the heat transfer from these appliances to the inner cylinder 11 and thus increasing the cooling efficiency of the refrigeration unit 17. The heat insulation layer 8 can be made of high-efficiency heat insulation materials, such as fiberglass or polyurethane foam, to improve the insulation effect. This application successfully solves the technical problem of the impact of heat generated during centrifugation on the motor 5 and the refrigeration unit 17 by using the partition 7 and the heat insulation layer 8. The design of this application can ensure the stable operation of the motor 5 and the refrigeration unit 17, extend the service life of the equipment, and improve the overall performance and reliability of the centrifuge.

[0042] Ventilation openings 3 are located below partition 7 on the side walls of the outer casing 1. Filter covers 2 are installed over the ventilation openings 3, and a fan 6 is installed at one of the ventilation openings 3. The fan 6 creates airflow, allowing outside air to enter the outer casing 1 through one ventilation opening 3 and exit through the other, thereby dissipating heat from the motor 5 and cooling device 17 from the outer casing 1 and ensuring their normal operation. The ventilation openings 3 can be designed in different shapes and sizes to accommodate different heat dissipation requirements. The filter cover 2 can be made of different materials, such as metal mesh or plastic mesh, to achieve different filtration effects and reduce dust entering the equipment. The fan 6 can be selected with different power and airflow models to meet different heat dissipation requirements. Furthermore, the positions of the ventilation openings 3 and the fan 6 can be adjusted according to specific circumstances to optimize airflow.

[0043] The latch 23 includes a receiving groove 234 formed on the side wall of the cover plate 13, in which a rod 231 is movably disposed. A spring 235 is provided at the tail end of the rod 231. A through groove 233 communicating with the receiving groove 234 is formed on the upper surface of the cover plate 13, and a handle 232 connected to the rod 231 is provided in the through groove 233. The operator can move the rod 231 through the handle 232, thereby disengaging the rod 231 from the insertion hole 24 and releasing the lock between the cover plate 13 and the outer shell 1. The spring 235 ensures that the rod 231 will not automatically disengage from the insertion hole 24 when the cover plate 13 and the outer shell 1 are locked.

[0044] Furthermore, the receiving slot 234 can adopt different shapes and sizes to accommodate the design requirements of the insertion rod 231. The insertion rod 231 can be made of metal or high-strength plastic to ensure its durability and reliability. The spring 235 can be selected with different spring coefficients to provide different elastic forces, ensuring that the insertion rod 231 can work reliably in different environments. The shape and size of the through slot 233 can be adjusted according to the design of the handle 232 to ensure that the handle 232 can move smoothly in the through slot. The handle 232 can be designed in different shapes, such as round, square, or other ergonomic shapes, to improve operating comfort and efficiency.

[0045] The cover plate 13 is square, allowing the latch 23 to be correctly aligned with the insertion hole 24 for locking. A sealing gasket 25, which is circular, is provided on the lower surface of the cover plate 13. Therefore, the stepped window 15 is designed with a square upper part and a circular lower part, as shown in the diagram. Figure 5 As shown.

[0046] A shock-absorbing pad 4 is provided at the bottom of the outer casing 1. By providing the shock-absorbing pad 4 at the bottom of the outer casing 1, the vibration caused by the high-speed operation of the motor 5 and the shaft 9 during the operation of the benchtop refrigerated centrifuge is effectively reduced. The shock-absorbing pad 4 can absorb and mitigate these vibrations, thereby maintaining the stability of the equipment, reducing the impact on the surrounding environment, and extending the service life of the equipment. The shock-absorbing pad 4 can be made of various materials, such as rubber, silicone, or other materials with high elasticity and shock absorption performance. The shape and thickness of the shock-absorbing pad 4 can be adjusted according to specific needs to achieve the best shock absorption effect. As a preferred embodiment, the shock-absorbing pad 4 can adopt a multi-layer structure, with each layer having different hardness and elasticity to further enhance the shock absorption effect. In addition, the shock-absorbing pad 4 can be installed at the bottom of the outer casing 1 by adhesive or mechanical fixation to ensure that it will not shift or fall off during use. Thus, by providing the shock-absorbing pad 4 at the bottom of the outer casing 1, this application effectively solves the vibration problem generated by the benchtop refrigerated centrifuge during operation. Compared with the prior art, the technical solution of this application can not only significantly reduce vibration, but also improve the stability and service life of the equipment, reduce maintenance needs, and improve the overall performance of the equipment and user experience.

[0047] A handle 14 is provided on the cover plate 13 for easy lifting of the cover plate 13.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A benchtop refrigerated centrifuge, comprising a shell, an inner cylinder disposed within the shell, a rotating shaft vertically disposed within the inner cylinder, the rotating shaft rotating and sealingly passing through the inner cylinder and connected to a motor, a test tube turntable connected to the upper end of the rotating shaft, a cooling channel disposed on the side wall of the inner cylinder, the cooling channel being connected to a refrigeration device via a pipe, characterized in that, The upper surface of the outer shell has a stepped window, a cover plate is placed in the stepped window, a latch is provided on the cover plate, and the outer shell has a socket that cooperates with the latch. The cover plate is connected to several vertically arranged connecting rods, and the lower end of the connecting rods is connected to a support ring. A water collection groove is provided on the support ring, and a rubber scraper is arranged in a ring on the outer side of the support ring to fit against the inner wall of the inner cylinder. The rubber scraper is inclined towards the water collection groove.

2. A benchtop refrigerated centrifuge according to claim 1, characterized in that The outer side of the support ring is provided with absorbent cotton located below the rubber scraper and in contact with the inner wall of the inner cylinder.

3. A benchtop refrigerated centrifuge as claimed in claim 1, wherein, The bottom of the inner cylinder is provided with a protrusion that mates with the inner side of the support ring.

4. A benchtop refrigerated centrifuge according to claim 3, wherein, The outer edge of the protrusion is rounded, and a guide slope is provided on the inner bottom of the support ring.

5. A benchtop refrigerated centrifuge as claimed in claim 3, wherein, The upper surface of the protrusion is provided with an inclined surface, and the inclined surface is inclined towards the water collection tank.

6. A benchtop refrigerated centrifuge as claimed in claim 1, wherein, The outer shell is provided with a partition located below the inner cylinder, and the lower surface of the partition is provided with a heat insulation layer. The motor and the refrigeration device are located below the partition.

7. A benchtop refrigerated centrifuge as claimed in claim 6, wherein, The sidewalls of the outer casing are provided with ventilation openings located below the partition, and the ventilation openings are covered with filter covers. A fan is installed at one of the ventilation openings.

8. A benchtop refrigerated centrifuge as claimed in claim 1, wherein, The latch includes a receiving groove formed on the side wall of the cover plate, a rod is movably disposed in the receiving groove, a spring is provided at the end of the rod, and a through groove is formed on the upper surface of the cover plate that communicates with the receiving groove, and a handle connected to the rod is provided in the through groove.

9. A benchtop refrigerated centrifuge according to claim 8, wherein, The cover plate is square.

10. A benchtop refrigerated centrifuge as claimed in claim 1, characterized in that The bottom of the outer casing is provided with shock-absorbing pads.

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